Gas-electric series-parallel type ship hybrid power system with fuel cell

Abstract

The invention aims at providing a gas-electric series-parallel type ship hybrid power system with a fuel cell. The gas-electric series-parallel type ship hybrid power system with the fuel cell comprises a gas machine, an electric motor and a power generator; the output end of the gas machine is connected with the first input end of a gearbox through a permanent magnet coupler; the output end of the electric motor is connected with the second input end of the gearbox through a first clutch; the input end of the power generator is connected with the first output end of the gearbox through a second clutch; the second output end of the gearbox is connected with a propeller; a liquefied natural gas tank is connected with a gas supply device; the gas supply device is connected with the gas machine and the fuel cell; the fuel cell, a storage battery, a ship load, an inverter and a rectifier are all electrically connected with a distributing board; the inverter is electrically connected with the electric motor through a frequency converter; and the power generator is electrically connected with the rectifier. According to the gas-electric series-parallel type ship hybrid power system withthe fuel cell, the operation efficiency of the gas machine and the operation efficiency of the electric motor are further enhanced, the fuel consumption and emission of the gas machine are effectivelyreduced, and the power response of a ship is improved.

Description

technical field [0001] The present invention relates to a power system, specifically a ship power system. Background technique [0002] With the increasingly serious energy and environmental problems in our country and the rapid rise of international oil prices, higher requirements are placed on the economy and emission of ships, and the energy-saving and emission-reduction technology of ships has become a hot spot of everyone's attention and research. one. [0003] Natural gas as engine fuel is an inevitable trend in the development of marine engines in the future. Natural gas has the advantages of environmental protection, economical benefits, safety and reliability. However, limited by the low technical level of natural gas engines at this stage, natural gas engines have disadvantages such as poor dynamic response and insufficient power. [0004] As a power generation device with high power generation efficiency, low environmental pollution, high specific energy, low no...

AI Technical Summary

Problems solved by technology

However, due to the influence of power generation methods, power density and energy storage technology, pure electric ships at this stage cannot achieve high-performance speed, acceleration and self-control, and their endurance is also limited by their battery capacity.

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